The simple delight of swimming, captured by illustrator Joanne Ho, brought me slightest glimmer of cheerfulness this morning, amidst all the tragic and devastating events that have occurred in our country in the last few days. No matter how small we might
Trigonometry Functions Chart - Great reference for Precalculus Students and Teachers. It includes all the major functions of sin, cos, and tan. It even includes the reciprocal functions of csc, sec, and cot.